Mountain Strong Thornton Gym

I've been a member at Mountain Strong for two months and it's the best gym experience I've ever had. The coaches care, teach you and push you to your limits. There is a place for everyone: Crossfitters, Climbers, and anyone willing to push themselves to be better. Wouldn't want to call any other gym home!

The community that Mountain Strong has been able to cultivate is wonderful. With many conditioning gyms, it sometimes can feel intimidating but not here. The coaches and owners make you feel part of their family. The members are open, friendly, and the best part, encouraging. The environment here allows your training to feel fun, that's the sweet spot in my opinion. Moving to Colorado and now been here for 2 years, 90% of my friends are from here. The gym always has phenomenal clinics to work on all types of things. From breathing, to climbing knots, to getting your rowing form perfect. They're always getting the community together for fun workouts followed by a relaxing BBQ after. I can write on and one but this place is truly magical. I am so grateful for the connections and life long friends that I have made. This has everything to do with the coaches and owners who have dedicated themselves to creating a place where your health and training can be a happy adventure. Don't get it twisted, they bring it and you will get your pump on but in a fun way.

Best gym I’ve ever joined. The coaches and community make the difference. From a coaching perspective, technique and safety come before performance. The coaches care more that you don’t get hurt than any other nonsense. The community, while friendly, pushes you to do your best. I’ve seen more gains in the last year than from any other competitive workout program.

The is the best gym I have ever been a member of. The coaches and other members are very supportive, encouraging, and helpful. I first started attending the gym as part of their seasonal Ski Conditioning class. When I began working out, an empty barbell was my workout weight, which made it intimidating to watch serious athletes workout around you. However, nobody judges or cares how much you can lift. Everyone is just happy to see people show up and work hard. I can highly recommend Mountain Strong!

Mountain Strong is an awesome gym! The CrossFit is great for a workout, and the bouldering wall is great to work on climbing skills. The unique climbing oriented "Kraft" workout classes are a great way to improve climbing strength and endurance.

The owners/trainers are fantastic and really know their stuff, (plus they're incredible athletes in case you need someone to compete against in the workouts).

The community is also really great, we're always meeting new cool people every time we go.

Now if they would only move their location closer to where I live... :)

Coaching staff is knowledgeable and friendly. They will help you reach your goals, whatever they may be! Highly recommend taking the free trial class to see for yourself.

I have been going to Mountain Strong since December and have enjoyed the challenge of the classes and the feeling of community that the gym offers. I really appreciate the knowledge and professionalism of the staff, and although I am newer to lifting, they have been patient and provided excellent feedback. I would absolutely recommend them to anyone looking for a gym that is just as passionate about fitness, health, and the outdoors!

Mountain Strong has been incredible to me. Their trainers are exceptional, the overall vibe is great and I have had nothing but good experiences. I definitely recommend them to my friends and family. Hands down the best choice I've made since the Pandemic hit, if you're looking for challenging workout with a great people - this is it.

I had no prior crossfit or climbing experience, but I've been at this gym for close to two years now and still love it! The coaches are all very knowledgeable and personable, and I've become a much better athlete as a result. There are plenty of offered class times, plus open gym times if that floats your boat. Honestly, no complaints here.

I can only review this place based on their climbing boot camp, but so far I highly recommend it. It says something when you can barely walk or raise your arms the next day after a workout. I like the climbing specific training instead of just general crossfit. The staff I have worked with so far has been motivating without yelling at you. I appreciate the extra focus on form to ensure nobody gets hurt. If you're trying to get up a grade, or 2!! Give them a try next boot camp.

Prior to joining Mountain Strong, I had been going to a traditional gym for fitness and a typical climbing gym for climbing. Both gyms were passable. However, my fitness levels and climbing grades had plateaued.

Then, I found Mountain Strong. The programing at this place is top-notch both from a Crossfit and climbing training standpoint. I've been going to classes regularly for over a year and I have consistently been getting stronger, fitter, and climbing harder. I always feel challenged and have yet to hit a plateau.

In addition to the strength and fitness benefits, Mountain Strong classes are fun and feel more like skiing or climbing with friends than working out. The coaches are outstanding and the other members are supportive and want everyone to succeed both in and out of the gym. I highly recommend Mountain Strong whether you’re a serious athlete looking to be pushed in new ways, a couch potato hoping to get in shape, or anywhere in between.

I got a Groupon for this place with a month left in Denver before moving. Awesome idea! All Crossfit gyms are different and what I like might not be what you like. This gym has a laid back "no pressure" feel while also kicking your ass! The folks that I met in my classes (mostly the 11 am class) were awesome guys and girls who were encouraging and funny. Will, Anne and Matt, the owners and coaches are passionate about what they do. All three are accomplished athletes, climbers and competitors! They listened to what I hoped to get out of my month and helped me achieve it. I never felt pressured and they do a great job tweaking workouts for each persons specific needs. Their climbing centered (Kraft) classes are an awesome work out as well. Fun to get on the wall and work on things you might not work on otherwise.

I could not recommend this place any more!! I only wish I had discovered it sooner.

I've been a member since late August of this year and have nothing but great things to say about the coaches, programming and facility overall. This gym is a true community of like minded people from all walks of life and all skill levels. Work outs will challenge you and you will indeed become mountain strong!

I was brand new to CrossFit and had a little bit of experience climbing. Being new to the area I was intimidated to try out this type of gym. However, the coaches and the members of Mountain Strong could not have been any more accommodating and welcoming. This is the perfect place whether you are a beginner or expert. Come on in and you'll get a workout and make some friends while you're at it.

One hell of a gym! I have been into CrossFit for years but this gym offers so much more that is unique to that Colorado life! Great programming, great coaches, awesome climbing and instruction if you want to learn to get outside and enjoy the mountains! Oh and an amazing community of like minded peeps!

Love this gym! Everyone was super friendly and welcoming during my first class. Hoping to return for their climbing boot camp or other climbing focused classes. I always find starting at a new gym to be super intimidating but it wasn’t at all, so if you’re nervous, don’t be!

This review is LONG overdue! I have been going to Mountain Strong for 2+ years now. I joined when I was 6 months postpartum with my first son, attended throughout my entire 2nd pregnancy and now am about 6 months postpartum with my second. The coaches have been super knowledgable, really supportive, and everyone who attends is just plain nice and fun people that you want to workout with! Love this gym, love the people, and love how they have whipped my ass into shape.

When I was invited by a friend of a friend to check out this part climbing, part CrossFit gym, I was skeptical. Having been intimidated from the larger climbing gyms and been injured from a previous CrossFit incident, I was mainly cautious.

The open and encouraging mentality not only from the coaches but also the community made it very comfortable to start.

Five months later, I have developed in both strength and endurance, bringing the fitness to my running, biking, hiking etc.

Keep up the great work Mountain Strong 😎

I participated in a month-long climbing training program at Mountain Strong. The instructor are extremely knowledgeable, inventive, and motivating. I have some old injuries, and they were very sensitive to my restrictions, and came up with modified exercises for me to perform. Highly recommend the gym!

I hadn't worked out in a traditional gym setting since college, and was super nervous to come back to lifting after 5 years away from it. The coaches were welcoming, met me at my skill level, and gave supportive and constructive feedback. Over the past year, my confidence has grown and I feel the strongest I ever felt!!